www.pudn.com > UIP09_ADSP-BF537_Blackfin_org.zip > cgi.c
/**
* \addtogroup httpd
* @{
*/
/**
* \file
* HTTP server script language C functions file.
* \author Adam Dunkels
*
* This file contains functions that are called by the web server
* scripts. The functions takes one argument, and the return value is
* interpreted as follows. A zero means that the function did not
* complete and should be invoked for the next packet as well. A
* non-zero value indicates that the function has completed and that
* the web server should move along to the next script line.
*
*/
/*
* Copyright (c) 2001, Adam Dunkels.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the uIP TCP/IP stack.
*
* $Id: cgi.c,v 1.23.2.4 2003/10/07 13:22:27 adam Exp $
*
*/
#include "uip.h"
#include "cgi.h"
#include "httpd.h"
#include "fs.h"
#include
#include
static u8_t print_stats(u8_t next);
static u8_t file_stats(u8_t next);
static u8_t tcp_stats(u8_t next);
cgifunction cgitab[] = {
print_stats, /* CGI function "a" */
file_stats, /* CGI function "b" */
tcp_stats /* CGI function "c" */
};
static const char closed[] = /* "CLOSED",*/
{0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
static const char syn_rcvd[] = /* "SYN-RCVD",*/
{0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
0x44, 0};
static const char syn_sent[] = /* "SYN-SENT",*/
{0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
0x54, 0};
static const char established[] = /* "ESTABLISHED",*/
{0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
0x45, 0x44, 0};
static const char fin_wait_1[] = /* "FIN-WAIT-1",*/
{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
0x54, 0x2d, 0x31, 0};
static const char fin_wait_2[] = /* "FIN-WAIT-2",*/
{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
0x54, 0x2d, 0x32, 0};
static const char closing[] = /* "CLOSING",*/
{0x43, 0x4c, 0x4f, 0x53, 0x49,
0x4e, 0x47, 0};
static const char time_wait[] = /* "TIME-WAIT,"*/
{0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
0x49, 0x54, 0};
static const char last_ack[] = /* "LAST-ACK"*/
{0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
0x4b, 0};
static const char *states[] = {
closed,
syn_rcvd,
syn_sent,
established,
fin_wait_1,
fin_wait_2,
closing,
time_wait,
last_ack};
/*-----------------------------------------------------------------------------------*/
/* print_stats:
*
* Prints out a part of the uIP statistics. The statistics data is
* written into the uip_appdata buffer. It overwrites any incoming
* packet.
*/
static u8_t
print_stats(u8_t next)
{
#if UIP_STATISTICS
u16_t i, j;
u8_t *buf;
u16_t *databytes;
if(next) {
/* If our last data has been acknowledged, we move on the next
chunk of statistics. */
hs->count = hs->count + 4;
if(hs->count >= sizeof(struct uip_stats)/sizeof(u16_t)) {
/* We have printed out all statistics, so we return 1 to
indicate that we are done. */
return 1;
}
}
/* Write part of the statistics into the uip_appdata buffer. */
databytes = (u16_t *)&uip_stat + hs->count;
buf = (u8_t *)uip_appdata;
j = 4 + 1;
i = hs->count;
while (i < sizeof(struct uip_stats)/sizeof(u16_t) && --j > 0) {
sprintf((char *)buf, "%5u\r\n", *databytes);
++databytes;
buf += 6;
++i;
}
/* Send the data. */
uip_send(uip_appdata, buf - uip_appdata);
return 0;
#else
return 1;
#endif /* UIP_STATISTICS */
}
/*-----------------------------------------------------------------------------------*/
static u8_t
file_stats(u8_t next)
{
/* We use sprintf() to print the number of file accesses to a
particular file (given as an argument to the function in the
script). We then use uip_send() to actually send the data. */
if(next) {
return 1;
}
uip_send(uip_appdata, sprintf((char *)uip_appdata, "%5u", fs_count(&hs->script[4])));
return 0;
}
/*-----------------------------------------------------------------------------------*/
static u8_t
tcp_stats(u8_t next)
{
struct uip_conn *conn;
if(next) {
/* If the previously sent data has been acknowledged, we move
forward one connection. */
if(++hs->count == UIP_CONNS) {
/* If all connections has been printed out, we are done and
return 1. */
return 1;
}
}
conn = &uip_conns[hs->count];
if((conn->tcpstateflags & TS_MASK) == CLOSED) {
uip_send(uip_appdata, sprintf((char *)uip_appdata,
"- - %u %u %c %c %u.%u.%u.%u:%u %s %u %u %c %c